| Crofton to Joliet (Illinois) | 628.43 mi (1,011.35 km) |
| Crofton to Jonesboro (Arkansas) | 798.32 mi (1,284.77 km) |
| Crofton to Joplin (Missouri) | 977.33 mi (1,572.86 km) |
| Crofton to Joppatowne (Maryland) | 32.97 mi (53.06 km) |
| Crofton to Juana Díaz (Puerto Rico) | 1,571.85 mi (2,529.65 km) |
| Crofton to Junction City (Kansas) | 1,080.53 mi (1,738.94 km) |
| Crofton to Juneau (Alaska) | 2,831.45 mi (4,556.77 km) |
| Crofton to Jupiter (Florida) | 858.81 mi (1,382.13 km) |
| Crofton to Jupiter Farms (Florida) | 860.10 mi (1,384.19 km) |
| Crofton to Jurupa Valley (California) | 2,272.49 mi (3,657.22 km) |
| Crofton to Justice (Illinois) | 616.20 mi (991.68 km) |
| Crofton to Kahului (Hawaii) | 4,789.80 mi (7,708.43 km) |
| Crofton to Kailua (Hawaii) | 4,836.43 mi (7,783.48 km) |
| Crofton to Kalamazoo (Michigan) | 518.15 mi (833.88 km) |
| Crofton to Kalispell (Montana) | 1,964.87 mi (3,162.15 km) |
